topic Re: how to check linux for I/O errors ? in Operating System - Linux

how to check linux for I/O errors ?

'chris' — Sat, 06 Sep 2003 12:16:42 GMT

hi

knows someone,
how to check linux for I/O errors ?

regards
chris

Re: how to check linux for I/O errors ?

Jean-Pierre Denis — Sun, 07 Sep 2003 01:42:03 GMT

Hi,

I/O errors would be displayed in /var/log/syslog or other log files.

Disk I/O errors would look like this:
Aug 8 06:40:09 linux kernel: I/O error: dev 0b:00, sector 64
Aug 8 06:40:09 linux kernel: I/O error: dev 0b:00, sector 88
Aug 8 06:40:09 linux kernel: I/O error: dev 0b:00, sector 64
Aug 8 06:40:09 linux last message repeated 8 times
Aug 8 11:05:54 linux kernel: I/O error: dev 0b:00, sector 64
Aug 8 11:05:54 linux last message repeated 9 times

Thanks,
JP

Re: how to check linux for I/O errors ?

'chris' — Thu, 11 Sep 2003 16:08:13 GMT

hi

there is it not any command from shell
to run the disk check for I/O errors ???

any other idea ?

best regards
chris

Re: how to check linux for I/O errors ?

Huc_1 — Thu, 11 Sep 2003 16:25:38 GMT

The error are logged in logs in /var/log

a way to see then interactively would be

tail -f /var/log/messages

have this running in one session and submit io intensive task in an other ( ex: like ls -lR /* )

there are a few other command related to io

# iostat 1 5

would display io statistics 5 time at 1 sec interval (also informe on page in page out)

sar -d ! display's output/input stat on device

the best is man of iostat sar

hope this helps.

J-P